Hello Monks:

I come to you because I know you are kind and wise.
I have written a number of parsers for CSV files and they have all been straight forward. Just used Text::CSV_PP to parse the lines into an array and away you go.
However the lastest CSV file I have been tasked with parsing has caused me much grief. There is something different about it. If I attempt to parse the file as I received it, the following code returns undefined:
$status = $csv->parse($row);
$col = $csv->fields();

$col is undefined. CSV_PP seems to be getting confused. Which means this loop will also fail:
while (defined($col = $csv->getline($fh) )) {

If I open the same CSV file in MS-Excel and save it out under a different name, as a CSV file, the parsing works just fine.

To get a handle on what is going on here I wrote this bit of code. 

while (defined($line = <> ))  {
  print $line  . "~~\n";
   
  for ( $i=0; $i <length($line); $i++) {
     $char =  substr($line, $i,1);     
     $hex  = sprintf("%1x", $char);
     print  $char  . "\t".  $hex  . "\n";
     
  }  #for

print "--new line--\n";
}  #while

[download]
What I am trying to do is read the text file in and then print out the line. Then print each character, every character including non-printables, and the corresponding hex value. This line is failing:
$hex = sprintf("%1x", $char);

just want to get the hex value of the character. But my Perl is not strong enough.

your kind assistance is requested.

kd

In reply to dump text file in ASCII and hex by kevind0718

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